ASTROSAT CZTI

Data Quality Report

Orbit 38028

Creation date: 2024-06-27T21:47:31.210694
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_082T01_9000005356_38028cztM0_level2.fits modeM0/AS1A11_082T01_9000005356_38028cztM0_level2_quad_clean.evt
Size (bytes)430,430,40090,394,560
Size410.5 MB 86.2 MB
Events in quadrant A2,830,751652,950
Events in quadrant B3,027,171669,755
Events in quadrant C2,716,458659,124
Events in quadrant D6,977,681412,417

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0112253
B0118592
C0107212
D0238682

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0980
B0980
C0980
D0980

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0340
B0340
C0340
D0350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4898150.306247%
B48981322.694978%
C4898200.408330%
D4898172835.279706%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7020 4899 6 6 0.09% 0.12%
B 7020 4899 97 97 1.38% 1.98%
C 7020 4899 10 10 0.14% 0.20%
D 7020 4898 1596 1596 22.74% 32.58%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 369191 3014.67 612 601 122.3
A 12 16 31033 248.9 612 601 122.3
A 15 174 23339 185.97 612 601 122.3
B 4 171 155643 1373.75 606 592 112.9
B 5 172 115333 1016.6 606 592 112.9
B 5 255 112715 993.41 606 592 112.9
C 15 214 215946 1564.47 607 614 137.6
C 1 23 39343 281.38 607 614 137.6
C 0 10 31145 221.82 607 614 137.6
D 12 227 3986768 32506.6 506 493 122.6
D 2 250 396761 3231.42 506 493 122.6
D 12 233 190645 1550.62 506 493 122.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter